Serial PermissionError(13, 'Access is denied.', None, 5) in EEG experiment (biosemi)

[wakecarter]

Do any of these links help?

Serial - could not open port ' COM4' - access denied

Hi, I am trying to send audio stimulus triggers to actiview (biosemi eeg) through serial port. But I keep getting this error message "serial.serialutil.SerialException: could not open port ‘COM4’: PermissionError(13, ‘Access is denied.’, None, 5) ". I am the admin and have rebooted the windows pc system, closed all other applications , restarted pyschopy but none worked. I also downloaded “Termite” as recommended by biosemi to check if the port COM4 is working alright and sending the right tri…

"Permission Denied" usb serial port error

PsychoPy version 2023.1.1 What are you trying to do Send triggers to a USB Device via COM4 My experiment works perfectly when it’s connected to a Mac running Psychopy 2022.2.5 and the triggers work When i try to open and run the same experiment on the computer at our MRI machine, I run into this error: raise SerialException("could not open port {!r}: {!r}".format(self.portstr, ctypes.WinError())) serial.serialutil.SerialException: could not open port 'COM4': PermissionError(13, 'Access is d…

Serial PermissionError issue

Hi everyone, I am having a problem with using a simple serial port trigger in psychopy sending simple triggers to an Arduino board. The program keeps giving me an access denied error - PermissionError(13, ‘Access is denied.’, None, 5). None of the suggestions on the forum for this issue have worked thus far - most I can find online just say that this means the COM port is occupied by something else, but I have repeatedly confirmed that is not the case here. I have done extensive troubleshootin…